stevens



June 24, 1930. H. D. STEVENS MACHINE FOR (HEATING AIR BAGS Filed Jan. 14, 1927 2 Sheets-Sheet 1 INVENTOR. .I-mH cEDj EvENi BY 1 I I l frw Full- ATTORNEY. V

June 24, 1930. H. D. STEVENS 1,763,337

MACHINE FOR COATING AIR BAGS Filed Jan. 14, 1927 2 Sheets-Sheet 2 INVENTOR. HnRAcEEfiTEvENa.

A TTORNEYJ.

Patented June 24, 1930' i i p UNITED STATES PATENT OFFICE HORACE D. STEVENS, OF AKRON, OHIO, ASSIGNOR TO THE FIRESTONE TIRE AND RUBBER COMPANY, OF AKRON, OHIO, A. CORPORATION OF OHIO MACHINE FOR COATING AIR BAGS Application filed January 14, 1927. Serial No. 161,050.

This invention relates to machines for attached thereto a pair of spaced discs 13,.

coating .air bags or other annular objects. 13 having mounted on the confronting inner The purpose of the invention is to profaces thereof a plurality of brushes or vide a machine for applying a coating of wipers 14, 14- positioned with their long liquid to the surfaces of an article of torus dimension radially of the disc and with their shape and particularly for applying on air free ends directed toward each other. A

bags used in the manufacture of pneumatic sleeve 15 fixed on shaft 11 also carries a tires, a thin uniform coating of dope or seriesof brushes or wipers 16, 16 mounted emulsion of glycerine and soapstone, mica, radially thereof and spaced between the talc, etc., preparatory to placing the bag in brushes or wipers 1a, the free ends of brushan unvulcanized tire casing, to prevent the es or wipers 16 being directed radially outbag from adhering to the casing during vulward. Rotation of shaft 11 is accomplished canization of the latter. by means of a motor 17 driving a chain 18 One object of the invention is to provide trained over a sprocket 19 fixed to shaft 11.

15 an annular series of revolving brushes or Shaft 12 has fixed thereto a pair of spaced wipers for engaging the sides and outer pediscs 20, 20 having radially mounted thereriphery of an annular or torus-shaped article. betweeen a series of plates 21. The lower A further object is to provide means for portions of the discs 20 and plates 21 are subguiding and revolving said article about its merged in a liquid 22 contained in a recepaxis to present its entire annular surface to tacle 23 mounted on frame 10, while the upsaid brushes. Another object is to provide per portions contact with brushes or wipers a revolving disc or paddle partly submerged 14k and 16 to transfer liquid thereto from in a liquid supply container and partly conthe receptacle as shafts 11 and 12 are rotated. tacting the revolving brushes for transfer- Shaft 12 is rotated at a slower rate of speed 25 ring a small amount of liquid from the conthan shaft 11 by means of chain 24: trained tainer to the brushes. Still another object over small sprocket 25 fixed on shaft 11 and is to provide means for adjusting the quanlarge sprocket 26 fixed on shaft 12. Means tity of the liquid transferred by the revolvfor rotating the annular or torus-shaped aring disc. ticle 27 (indicated by dotted lines) during 30 The foregoing and other objects are obthe coating operation, is provided by rollers tained by the device illustrated in the accom- 28, 28 mounted on frame 10 and driven by panying drawings and described below. It a chain 29 meshing with sprockets 30, 30 is to be understood that the device is not fixed to said rollers and trained over adjust- 1 limited to the specific form thereof dising idlers 31, 31 and drive sprocket 32 fixed 35 closed herein. on shaft 11. Vertical arms 33, 33 attached Of the accompanying drawings: to frame 10 carry shafts 34?, 34 upon which Figure 1 is a front elevation, partly in are mounted rollers 35, 35 forthe purpose of section, of a machine embodying the pringuiding the annular object 27 and holding ciples of the invention; and the same in proper vertical alignment. Re-

40 Figure 2 is a left end elevation thereof, ceptacle 23 is provided with flaring side expartly broken away. tensions 36, ,36 to catch any liquid which Referring more particularly to the drawmay be splashed by'the brushes, and adjustings, 10 represents the frame having jourable scraper 37 may be suitably mounted adnaled therein upper and lower shafts 11 jacent discs 20 to permit any desired thickand 12 respectively. The upper shaft has ness of liquid to remain thereon. The quantity of liquid transferred to the brushes is thus variable for obtaining the utmost efliciency in the coating. operation. As many of I the above described units as desired may be mounted on one frame and operated by a single drive means, the present drawings showing two units mounted in the frame.

The operation of the machine has been set out in connection with the description of the structure thereof and need not further be explained. If desired, plates 21 and central brushes or wipers 16 may be omitted and the side brushes let alone employed to perform the coating operation, or if a thick coating of liquid on the article is desired, shaft 12,- and discs 20, 20 may also be omitted and the brushes 14 allowed to dip directly into fluid receptacle 28. Other modifications of the shafts.

I IORA'CHEv D. STEVENS.

invention may be resorted to without depart- 7 ing from the spirit thereof or the scope of the appended claims.

' What is claimed is 1. A machine for coating annular objects, comprising a frame having journaled therein upper and lower shafts, a pair of spaced discs fixed to said upper shaft, a series of wipers mounted radially about said discs, on the confronting faces, thereof for engaging the sides of an annular article to be coated, a central series of wipers mounted radially about said upper shaft and affixed thereto between said discs for engaging the'periphcry of the annular article to, be Coated, a pair of spaced discs fixed to said lower shaft and having a series of radial plates mounted therebetween, the upper portions of the last-named discs and said plates engaging a portion of the side engaging wlpers and central wipers respectively, a receptacle for containing liquid in which said last named discs and plates are adapted to be partly submerged, whereby rotation of said discs and said wipers will; transfer a quan: tity of liquid from the receptacle to the sides and periphery of the annular article to be coated, means for varying the quantity of liquid thus transferred, driven rollers for supporting and circumferentially rotating the annularobject toobe coated, means for guiding the latter on said rollers,jand means for rotating said shafts and said, rollers.

2. A machine for coatingannular objects, comprising a frame having journaled therein upper and lower shafts, a pair of spaced g discs fixed to said upper shaft, a series of wipers mounted radially about said discs on the confronting faces thereof for engaging the sides of an annular article to becoated, a central series of. wipers mounted radially about said upper shaft and aflixed thereto between said discs for engaging the periphery of'the annular article to be coated, a. pair of spaced, discs fixed to said lower shaft and having a, seriesrof radial plates 1; mounted therebetween, the upper portions of 

